- ntg-context - Mailing Lists

Math accents set too close to capital
by Michael Murphy 01 Aug '13

01 Aug '13

Hello all, I'm trying to typeset 'H' with a circumflex (or hat) in math mode, but the result is rather ugly when not using latin-modern. I've tried to redefine the \hat macro to move the accent up a bit using \topaccent: is this the best approach? Having to nest '$' does not seem right at all. (Also, for some reason although I find \mathhat in enco-ini.mkiv, when I try to use it I get undefined control sequence.) Thanks, Michael \starttypescript [mathfont] \definetypeface [mathfont] [mm] [math] [palatino] [default] [rscale=1.0] \stoptypescript \usetypescript[mathfont] \setupbodyfont[mathfont] \starttext $\hat{H}$ \def\hat#1{\topaccent{3pt}{0}{90}{\textcircumflex}{$#1$}} $\hat{H}$ \stoptext -- Michael Murphy murphy.md(a)gmail.com

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Path problems w/ MkIV on Arch Linux
by Matt Gushee 01 Aug '13

01 Aug '13

Hello, Folks-- Once again I'm returning to ConTeXt after a long absence [maybe if I just kept using it I wouldn't have these problems?]. I'm trying to get started with MkIV; I don't feel a strong need to have the very latest code, so unless there are serious bugs, I want to use the version included with TexLive. At any rate, that's what I currently have and am trying to use. But I am running into issues with files not being found, e.g.: $ context --make mtxrun | unknown script 'context.lua' or 'mtx-context.lua' Yes, I ran mtxrun --generate first, though I am a bit confused as to whether I need to run that *and* luatools --generate, or just one or the other. Anyway, mtxrun --generate appears to work: $ mtxrun --generate .... resolvers | resolving | found configuration file '/usr/share/texmf-dist/web2c/texmfcnf.lua' .... system | lua | compiling '/var/cache/texmf/luatex-cache/context/0399a8df3aef8d154781d0a9c2b8e28d/trees/5044cbe2799fe389b078f26ff6b9ee8e.lua' into '/var/cache/texmf/luatex-cache/context/0399a8df3aef8d154781d0a9c2b8e28d/trees/5044cbe2799fe389b078f26ff6b9ee8e.luc' system | lua | dumping '/var/cache/texmf/luatex-cache/context/0399a8df3aef8d154781d0a9c2b8e28d/trees/5044cbe2799fe389b078f26ff6b9ee8e.lua' into '/var/cache/texmf/luatex-cache/context/0399a8df3aef8d154781d0a9c2b8e28d/trees/5044cbe2799fe389b078f26ff6b9ee8e.luc' stripped resolvers | caching | 'files' compiled to '/var/cache/texmf/luatex-cache/context/0399a8df3aef8d154781d0a9c2b8e28d/trees/5044cbe2799fe389b078f26ff6b9ee8e.luc' This shows that mtxrun finds the correct configuration file--as far as I know, /usr/share/texmf-dist/web2c/texmfcnf.lua is the only instance of texmfcnf.lua on my system. And then it uses the value I have set in texmfcnf.lua to cache its output: TEXMFCACHE = "/var/cache/texmf", -- not used by context at all TEXMFSYSVAR = "$TEXMFCACHE", TEXMFVAR = "$TEXMFCACHE", So that's good. Yet the 'context' and 'luatools' commands can't find the lua scripts. Well, I hypothesized that $LUAINPUTS might be wrong, so I tried this: LUAINPUTS=/usr/share/texmf-dist/scripts/context/lua luatools --generate And it seems to work. However: LUAINPUTS=/usr/share/texmf-dist/scripts/context/lua context --make .... resolvers | resolving | using given filetype 'tex' resolvers | resolving | remembering file 'cont-en.mkiv' resolvers | resolving | using given filetype 'tex' resolvers | resolving | remembering file 'cont-en.tex' resolvers | formats | no tex source file with name 'cont-en' (mkiv or tex) resolvers | formats | using format path '/var/cache/texmf/luatex-cache/context/0399a8df3aef8d154781d0a9c2b8e28d/formats/luatex' resolvers | resolving | using given filetype 'tex' resolvers | resolving | remembering file 'cont-nl.mkiv' resolvers | resolving | using given filetype 'tex' resolvers | resolving | remembering file 'cont-nl.tex' resolvers | formats | no tex source file with name 'cont-nl' (mkiv or tex) system | total runtime: 0.239 So now the lua scripts are found, but the context macro files are not. At this point let me describe how my system is set up. As I said above, I'm attempting to use the ConTeXt that comes with TexLive. I've just upgraded TeXLive to the 2013 release, but that does not seem to affect these issues. Anyway, the executables are in /usr/bin; /usr/bin/mtxrun is the complete Lua script (i.e. not a symlink or any sort of stub), which appears to be identical to $TEXMF/scripts/context/stubs/unix/mtxrun. /usr/bin/luatools and /usr/bin/context also appear to be copies of their counterparts in the aforementioned stubs directory. The TeXLive packages for Arch provide the following trees: /usr/share/texmf /usr/share/texmf-dist /usr/share/texmf-config Almost everything important is now in /usr/share/texmf-dist, and there are no ConTeXt-related files in /usr/share/texmf. Accordingly, texmf.cnf contains the following definitions: TEXMFDIST = $TEXMFROOT/texmf-dist TEXMFMAIN = $TEXMFDIST TEXMFLOCAL = /usr/local/share/texmf;/usr/share/texmf So I have updated texmfcnf.lua to contain the following: TEXMFDIST = "selfautoparent:texmf-dist", TEXMFMAIN = "$TEXMFDIST", TEXMFLOCAL = "/usr{/local}/share/texmf", I'm not sure if that syntax is correct, but the definition of TEXMFLOCAL does not appear to affect the issues I'm concerned with here. Also, I should mention that my main reason for defining TEXMFLOCAL as I did (as well as TEXMFCACHE = /var/cache/texmf), is that I feel rather strongly (in keeping with what I understand to be 'Linux best practices') that files which are not managed by the Linux package manager should not be under /usr. But if by chance that is causing problems I don't absolutely have to do it that way. Anyway, somehow important files are not being found. Any suggestions? -- Matt Gushee

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Re: [NTG-context] Math fallback
by John Kitzmiller 01 Aug '13

01 Aug '13

On Jul 31, 2013, at 12:15 PM, ntg-context-request(a)ntg.nl wrote: > > Am 30.07.2013 um 18:55 schrieb Aditya Mahajan <adityam(a)umich.edu>: > >> Is it possible to use the fallback mechanism for math fonts? For example, I am using Neo Euler for math which has a few missing glyphs. Can I use Cambria (or Xits) as a fallback font for missing glyphs. >> >> I am using the simplefonts module, but I am happy to write a typescript file if that makes things easier. I do not really want to define a new virtual font. > > The simplefonts module is written on top of the typescript mechanism and there is nothing available at this level which can be used by the module. When you use the \setmathfont command simplefonts loads only one of the predefined typescripts. > > Wolfgang I too would like to use Neo Euler for math but need some of the missing glyphs/symbols, like \angle and \triangle. What would the typescript look like to provide fallback to font for the symbols? John

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xmlfilter in lua
by Thomas A. Schmitz 01 Aug '13

01 Aug '13

Hi, hope this is comprehensible without a full example: I want to do some operations on my xml, and that's easier to do in Lua. However, I cannot find how to filter my results and pass them on to a command. In TeX, I would do this: \startxmlsetups xml:a \xmlfilter{#1}{/b/command(xml:command:b)} \stopxmlsetups \startxmlsetups xml:command:b \xmlconcat{#1}{/}\par \stopxmlsetups How would I do the same thing in Lua? Here's what I tried: function xml.functions.a(t) local b = lxml.filter(lxml.id(t), "/b") process(b) end function process(t) xml.xprint(t) end but that doesn't work yet, I get no results printed. So my question: what would be the right syntax in Lua? (And bonus points for: what is the equivalent of \xmlconcat ?) All best Thomas

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new beta luatex error
by Marco Patzer 01 Aug '13

01 Aug '13

\starttext foo \stoptext ! LuaTeX error [string "\directlua "]:1: attempt to call field 'resetprevdepth' (a nil value) stack traceback: [string "\directlua "]:1: in main chunk. Marco

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Inserting verbatim text in a figure and framed.
by john Culleton 31 Jul '13

31 Jul '13

Here is my code so far. I want to show a file in verbatim form. It compiles but here is no frame around the text and there is no caption. ---------------------------- \startbuffer[ex1] \typefile[]{example1.tex} \stopbuffer \placefigure[here][fig:ex1] {Example 1} {\externalfigure[ex1.buffer][width=.75\textwidth]} -------------------------------------------------- I am following the example at the foot of page 303 in the manual. Any suggestions? John Culleton

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Math fallback
by Aditya Mahajan 31 Jul '13

31 Jul '13

Is it possible to use the fallback mechanism for math fonts? For example, I am using Neo Euler for math which has a few missing glyphs. Can I use Cambria (or Xits) as a fallback font for missing glyphs. I am using the simplefonts module, but I am happy to write a typescript file if that makes things easier. I do not really want to define a new virtual font. Aditya

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Left-justifying the date in the letter module
by Michael Ash 31 Jul '13

31 Jul '13

I am still having a problem with left-justifying the date in letters. The date is towards the left but is aligned several mm to the right of the other text. \usemodule[letter] %% Omit the word "Date", attempt to left-justify date (doesn't align perfectly) \setupletterlayer[reference][alternative=c] \defineletterelement[layer][address][example]{\correspondenceparameter{toname}\par} \setupletterlayer[address][alternative=example] \starttext \startletter[ toname={The Addressee}, opening={Dear Addressee:}, closing={Best regards,}, signature={I.M. Sender}] \input knuth \stopletter \stoptext BTW are the values for the "alternative" key ("example", "e", "c", etc.) documented somewhere? Thank you again. Best, Michael

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Change URL color to match layer
by Michael Ash 31 Jul '13

31 Jul '13

I would like to change the color of URL's in parts of a document. In particular I am using the letter module and would like to have the color of URL's match the color of text in the letterhead and then change to match the color in the main body of the letter. I can set the URL color once with \setupinteraction but I do not see how to change it thereafter. Thank you very much for your guidance. Best, Michael \usemodule[letter] \setupinteraction[state=start,color=black] %% \setupinteraction[state=start,color=red] %% Would like this URL to match the color of the return address ("location") \useURL[author-email][mailto:mash@econs.umass.edu][][mash@econs.umass.edu] %% Would like this URL to match the color of the recipient's address ("address") \useURL[recipient-email][mailto:addressee@gmail.com][][addressee@gmail.com] %% Would like this URL to match the color of the main body \useURL[knuthbio][ http://en.wikipedia.org/wiki/Donald_Knuth][][http://en.wikipedia.org/wiki/D… ] \setupletter[ name={Michael Ash}, email={\from[author-email]} ] \setupletter[signature={Michael Ash}] \defineletterelement[layer][location][example]{\correspondenceparameter{name} \correspondenceparameter{email}\par} \setupletterlayer[location][alternative=example,color=red] \defineletterelement[layer][address][example]{\correspondenceparameter{toname}\par} \setupletterlayer[address][alternative=example,color=blue] \starttext \startletter[ toname={The Addressee\\\from[recipient-email]}, opening={Dear Addressee:}, closing={Best regards,}] Enjoy \from[knuthbio] \stopletter \stoptext

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Questions about mathfence
by Aditya Mahajan 30 Jul '13

30 Jul '13

Hi, Some questions/remarks about math fences 1. When using \definemathfence[colorbracket][bar][middle=0x7C,color=red, command=yes] \starttext \startformula \colorbracket{\frac {a}{b}\fence a = b}^n \stopformula \stoptext The delimiter is of the wrong color (black instead of red), and the clause after \fence is red. I am doing something wrong or is it a bug. 2. For some types of expressions, for example, probability, the middle delimiter should have the space similar to mathrel, rather than mathord. For example, while typing I often use: \Pr\left( X = \frac {a}{b} \,\middle|\, Y = \frac{c}{d} \right) Would it be worthwhile to add these extra spaces by default (not sure what is the convention in physics/quantum mechanics for bra and ket notation) or as an option. 3. Finally, why are the default values of left, middle, and right = 0x2E. Isn't 0x7C a better default? Thanks, Aditya

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